The Judicial Charter of Koloth was a formal ruling in Klingon law, which stated that "an advocate is entitled to challenge the charges at any point during the tribunal." By the 22nd century, this right was considered archaic, and it was accepted form that, when the magistrate began his deliberations, all testimony would be suspended.
In 2152, Kolos, Jonathan Archer's advocate, cited this charter when requesting permission to let Archer testify in his own defense, despite the fact that the period for testimony had concluded. When Orak, the prosecutor on the case, objected, Kolos responded that the charter had never been overturned, forcing the magistrate to reluctantly allow the testimony. (ENT: "Judgment")